Influence of tool geometry on single-crystal CaF2 in an ultra-precision machining

Yuta Mizumoto, Hikaru Amano, Mika Fuchida, Takasumi Tanabe, Yasuhiro Kakinuma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Optical signal processing circuits can realize ultimately efficient signal processing. Optical micro-cavities, which can localize light at certain spots, are important components for the circuits. Single-crystal calcium fluoride (CaF2) is the most suitable material for highly efficient optical micro-cavities, and ultra-precision cylindrical turning (UPCT) is a feasible fabrication process for CaF2 optical micro-cavities. However, CaF2 is characterized by brittleness and crystal anisotropy; therefore, it is necessary to prevent microcracks in UPCT because such cracks would lead to light scattering and cavity performance deterioration. In this study, we conduct plunge-cut tests on CaF2 substrate with various single point diamond tools, and experimentally investigate the influence of tool geometry and process parameters on critical depth of cut. Based on the experimental results, enhancement of CaF2 micro-cavity is attempted.

Original languageEnglish
Title of host publicationProceedings of the 17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017
Publishereuspen
Pages117-118
Number of pages2
ISBN (Electronic)9780995775107
Publication statusPublished - 2017 Jan 1
Event17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017 - Hannover, Germany
Duration: 2017 May 292017 Jun 2

Other

Other17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017
CountryGermany
CityHannover
Period17/5/2917/6/2

Keywords

  • Anisotropy
  • Optical
  • Single crystal
  • Ultra-precision

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering
  • Instrumentation
  • Industrial and Manufacturing Engineering
  • Environmental Engineering

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  • Cite this

    Mizumoto, Y., Amano, H., Fuchida, M., Tanabe, T., & Kakinuma, Y. (2017). Influence of tool geometry on single-crystal CaF2 in an ultra-precision machining. In Proceedings of the 17th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2017 (pp. 117-118). euspen.